THERE, THERE

Brendan Emmett Quigley (1-4)

The answer to each clue will contain two repeated words.

1. Train, in baby-talk

2. Auctioneer final words 

3. Their second line is always "Who's there?"

4. Chances of winning on a single coin flip

5. Welcome words from the optometrist

6. Peter Pan's place

Answers:

 

1. Choo-choo

2. Going, going, gone

3. Knock, knock

4. Fifty-fifty odds

5. Twenty-twenty vision

6. Never Never Land